/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.examples.coachshuttlegathering.domain.location;
import java.util.Map;
import com.thoughtworks.xstream.annotations.XStreamAlias;
import org.optaplanner.examples.common.domain.AbstractPersistable;
@XStreamAlias("CsgRoadLocation")
public class RoadLocation extends AbstractPersistable {
protected double latitude;
protected double longitude;
protected Map<RoadLocation, RoadLocationArc> travelDistanceMap;
public RoadLocation() {
}
public RoadLocation(long id, double latitude, double longitude) {
super(id);
this.latitude = latitude;
this.longitude = longitude;
}
public double getLatitude() {
return latitude;
}
public void setLatitude(double latitude) {
this.latitude = latitude;
}
public double getLongitude() {
return longitude;
}
public void setLongitude(double longitude) {
this.longitude = longitude;
}
public Map<RoadLocation, RoadLocationArc> getTravelDistanceMap() {
return travelDistanceMap;
}
public void setTravelDistanceMap(Map<RoadLocation, RoadLocationArc> travelDistanceMap) {
this.travelDistanceMap = travelDistanceMap;
}
// ************************************************************************
// Complex methods
// ************************************************************************
public int getCoachDistanceTo(RoadLocation location) {
return travelDistanceMap.get(location).getCoachDistance();
}
public int getCoachDurationTo(RoadLocation location) {
return travelDistanceMap.get(location).getCoachDuration();
}
public int getShuttleDistanceTo(RoadLocation location) {
return travelDistanceMap.get(location).getShuttleDistance();
}
public int getShuttleDurationTo(RoadLocation location) {
return travelDistanceMap.get(location).getShuttleDuration();
}
public int getMaximumDistanceTo(RoadLocation location) {
RoadLocationArc locationArc = travelDistanceMap.get(location);
return Math.max(locationArc.getCoachDistance(), locationArc.getShuttleDistance());
}
public double getAirDistanceDouble(RoadLocation location) {
// Implementation specified by TSPLIB http://www2.iwr.uni-heidelberg.de/groups/comopt/software/TSPLIB95/
// Euclidean distance (Pythagorean theorem) - not correct when the surface is a sphere
double latitudeDifference = location.latitude - latitude;
double longitudeDifference = location.longitude - longitude;
return Math.sqrt(
(latitudeDifference * latitudeDifference) + (longitudeDifference * longitudeDifference));
}
/**
* The angle relative to the direction EAST.
* @param location never null
* @return in Cartesian coordinates
*/
public double getAngle(RoadLocation location) {
// Euclidean distance (Pythagorean theorem) - not correct when the surface is a sphere
double latitudeDifference = location.latitude - latitude;
double longitudeDifference = location.longitude - longitude;
return Math.atan2(latitudeDifference, longitudeDifference);
}
}